So I took the advice offered here and completed the Windows 7 installation, then I allowed Windows Update to, em, Update. I had to find the nPower network driver and then the Nvidia GeForce 8 Vista drivers (I also tried the Windows 7 drivers). However, device manager tells me that it is not able to allocate enough resources for this device to function correctly.
Looks like an IRQ conflict.
Really, I thought I left this sort of cr&*p behind with Windows 95.
I have spent an hour disabling devices and restarting the machine, but nothing works. I could do with some help here please?